1. May 31, 2006H-G Moser MPI fuer Physik/HLL Summary ILC VTX Workshop Ringberg Castle – May 28-31, 2006

2. May 31, 2006H-G Moser MPI fuer Physik/HLL Overwhelming flow of information Impossible to summarize (and.. we had only a plenary, no excuse if you missed something

3. May 31, 2006H-G Moser MPI fuer Physik/HLL Detector concept studies for ILC are now moving from basic concepts to optimization of detector parameters. The aim of the benchmark panel is to aid this process by proposing a minimum set of physics modes that cover capabilities of detector performance Benchmark test should relate performance and detector parameters in a direct way (no complicated highly tuned algorithms with “hidden parameters”, no algorithm dependence) However, must be powerful enough to show differences Benchmarking the Vertex Tracker (Marco Battaglia) Benchmark panel report sent to WWS and Detector Concepts contacts to appear on the LCWS05 proceedings and available as arXiv:hep-ex/0603010 Physic Requirements/Simulation

4. May 31, 2006H-G Moser MPI fuer Physik/HLL See also S. Hillert’s talk

5. May 31, 2006H-G Moser MPI fuer Physik/HLL Jet Flavour tagging (T. Kuhn) Motivation: Higgs Branching Ratios Most important VTX Parameter: radius of Inner layer B tag robust C tag more sensitive, Good benchmark Results from different analyses presented so far differ mostly due to different analysis techniques: difficult to conclude on detector concepts!

6. May 31, 2006H-G Moser MPI fuer Physik/HLL The VTX detector in the ILC software framework (Frank Gaede) Filling the structure: Implementing a realistic VTX Geometry in G4 (Damien Grandjean) DEPFET pixel sensor simulation in Marlin (Alexei Raspereza) CMOS Pixel sensor simulation in Marlin (Marco Battaglia) Impressive progress More and more features are simulated Studies of dead material, magnetic field, cluster size, straggling….. Important: comparison with testbeam data Need to implement integrated tracking (up/from to TPC) Missing: disks! Situation at SiD, GLD ?

7. May 31, 2006H-G Moser MPI fuer Physik/HLL SiD (Bill Cooper) LDC (Sonja Hillert) GLD (Yasuhiro Sugimoto) Detector Concepts 250 mm 15 mm 60 mm 100 mm S. Hillert:  Detector concepts differ in overall size and therefore in B-field and inner radius of the vertex detector.  Other differences are not necessarily related to global detector design: SiD: short barrel and forward disks LDC: long barrel and tracking from additional silicon detectors in forward region

8. May 31, 2006H-G Moser MPI fuer Physik/HLL Comparison LDC, SiD, GLD (Vertex charge, S. Hillert) Despite different concepts: very small differences! 50 (August 05)

9. May 31, 2006H-G Moser MPI fuer Physik/HLL Integration, Interconnection Bill Cooper: FEA simulations of distortions, Cooling studies Petra Riedler: ALICE Experience Devis Contarato: Star Module R&D

10. May 31, 2006H-G Moser MPI fuer Physik/HLL cm Su Dong, May 2006 Material Contribution due to Disks

11. May 31, 2006H-G Moser MPI fuer Physik/HLL

12. May 31, 2006H-G Moser MPI fuer Physik/HLL Machine related Background (Adrian Vogel) New: include backscattered Particles -> inhomogenities Increase by ~ 50% compared to previous figures ?

13. May 31, 2006H-G Moser MPI fuer Physik/HLL Technologies Many different technologies CP-CCD DEPFET FAPS FP-CCD MAPS MAPS (tripple well) SOI 3D Excellent reviews by Konstantin Stefanov, Joel Goldstein, Rainer Richter, Hans Krueger, Marc Winter, Devis Contarato, Valerio Re, Tadashi Nagamine, Ray Yarema, Wojciech Kucewicz

14. May 31, 2006H-G Moser MPI fuer Physik/HLL Common problems: - Resolution -Speed (except for insitu storage) -Material -Signal/Noise -Radiation Hardness -Power -EMI protection Some technologies “mature” close to specs, or ok Some in very early R&D stage but very promising None ready to be used from the shelf Show stoppers still possible Complex optimisation: Pixel Size <> Resolution <> Speed Speed <> Power <> Material Power <> Noise <> Resolution …………………….. Detector Concept/Physics dependent……. Detector Concept Matrix: LDCSiDGLD4th CPCCDx?? MAPSxXX? ISISX? DEPFETX? FPCCDX? FAPSX? 3D????

15. May 31, 2006H-G Moser MPI fuer Physik/HLL Re-evaluate basic design parameters? (larger pair background) Faster readout of L0 and L1? More material? Larger pixel in outer layer Marc Winter

16. May 31, 2006H-G Moser MPI fuer Physik/HLL How/When to converge? When it is needed! not now, when we have clear schedule for ILC Based on prototype ladders, well tested and documented For now: support diversified R&D (we have the chance to get a better detector) Don’t stop R&D saying “not enough time” (we don’t know how much time we still have, honestly) Develop collaborations (There are common issues: mechanics, cables, testbeams, irradiations…) Agree on common specs, documentation, reporting, tests (=> “white paper”)

17. May 31, 2006H-G Moser MPI fuer Physik/HLL Common Effort: EUDET Jolante Sztuk/Tobias Haas FP6 program 7 MEuro EU funds

18. May 31, 2006H-G Moser MPI fuer Physik/HLL Common Issue: EMI (Chris Damerell) Use XFEL facility at DESY

19. May 31, 2006H-G Moser MPI fuer Physik/HLL Summary Thanks to All participants and especially the speakers, Laci Andricek and Patricia Schmalhofer for the organisation, Axel Hoermann and the Ringberg staff Questions: Continuation of such workshops ? -every two years ? -Elsewhere ?